https://bugzilla.kernel.org/show_bug.cgi?id=80851

Bug ID: 80851 Summary: Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight Product: Drivers Version: 2.5 Kernel Version: 3.15.6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: swoorupj@gmail.com Regression: No

Created attachment 143781 --> https://bugzilla.kernel.org/attachment.cgi?id=143781&action=edit dmesg log

Hi,

When using the radeon DRM module in kernel, putting the system back to sleep and resuming always results in blank screen. It only works if the radeon kernel module is disabled.

My System Specs: Asus K55N laptop Processory: AMD A6-4400M APU Graphics: Radeon HD 7520G

With windows 7/8, resuming just simply works fine though

Regards, Swoorup